Fuel-feeding device for internal-combustion engines.



. C. S.'BURT0N. y FUEL `FEEDING DEVICE FOR INTERNAL COMBUSTION ENGINES.`APPLICATION FILED lULY, 9. 9l7,

,296,364. l E. Patented Mar. 4,1919.

' lm Movements in Fuel-lleeflinxgl Devices for .s ilu CHARLES S.BUELTGN, DE' OAK RK, ILLNGES.

FUEL-.FEEBIQ'G DEVCE EGR INTERNAL-COMBUSTIN ENGINES.

Specification of Letters latent.

A@alimenteifi Mar., ai, lllllx ipplieetoil led July 9, 19.1.7. Serial 1o. 179,580.

2"( all w/om may concern.'

Be it known that LCH/@LES S, BURTON, n, citizen of lie United States,residing at @alc Perla, f'glie county of Cook incl Sini@ of Illinois,have invented lieuv and useful lnteriialfloiul:uetiou Engines, ofWliicli the following is a specification, reference being luid 'lo *fleeiceoiiipenyiiig drawings, orming' :i Ser irl'iereof The purpose of videmi impi'ovecl vacuum fuel 'feed his inveniioii is io 1 evice of allenature f fior un internal comb-uetion emilie. consists iutlie elemenisund;

fem -e oli' eoiislructiou Shown and described as inugeaed in 'alieeleiuie. l

.ln lie lli-rinvii Figure l 1.

Cle elevation showing a, por-- tion of Aau engine 'of au utomoliileequ-ippecl willi this invention.

Fig'. 2 a per/fly Sectional smile elevation showing' in conventionalform u vacuum 'uel feed device, und in vertical section the low levelmain supply tank und liquid fuel flue, eomiectione therein whichconstitute the di?? tingijuisliing; feature of this invention.

lig. 3 a (liugmuuniaticwiew showing the invention applied directly tothe float cliaiiilier of the enrbiireter uf'iliout the interveiil-ioiio'l' ille .usual vecu-imi taiil,--tlie limit chamber being shown inaxial secigioii.

The engiiie intake manifold., l, is shown connected with u vacuum fuelfeed device of familiar form comprising' is supplemental reservoir, 2,for supplying the carlo'urete?7 uml fi-so-eelleel fieuum chamber, 3,.iiilo Wliioli 'llieliqi'eiil fuel is l'ilell by the suction 0f illeengine *from zi low level 'mein tenir, il, and Supplied liv :if "1U loree yNoir,

cimiiilier 2 oi being proclue luy is suction com of lire ilu-bee 5,leading im im z to engine mssini'lfolil. lle Strueure is of tlie liqu lL) neet-imi by means the. 'ie-uur@ ieri fair fles lfeil, 'zimil fr ziiaud Cieli The eziluires Cousitusiug "elle, pree feuioii .fire leeigneciio oiereoiiie u efeet which lieg been ex perieneecl in alle use oivacuum, i'uel reeel (leif'ices, arising from the fue?, "liat under ieoiulitious of Service of the engine, io` produeecl by the engine isliable io lie limi.J Guile lo lill. 'zlie liquid from llie mein low ,veltfmlc to ille vacuum olifiiuril when sueli coilitioiiss eoniiiue for el?Knef es when ascending :i

Column This uepirzitioii or ziergrtion the points of the ieeli, etleest. iii the sur slope requiring the engine to run with e, Wide-'operitlirotile for a, Considerable time, the reserve fuel accuiriuleted inthe reserve chemio r, 2, becomes exhausted before il: can be reeuppliedfrom tlie main tank. This defect is overcome in alie presei revise by imexpedient which amounts substantially to causing the suction forliifuirggg lie liquid from the low tank to operaie uilen 'the liquid inlie low luuk in Snell a` manner to atomize lo): aspiration so that. itnot tliereu'cer liieil s liquifl eoluiim bu 'either ue .fi liquidfreig'liteil ziir eelumi, or leest e highly eeraefl liquicl. .Columnwhich cri-ii lie sustaineii by 'alie aimosplierie [pressure op? ei'alingon l'lie surface of tlisliquicl `iii the mein' izmir lo .f1 much greaterheight than that pressure would susaiii e, solid; liquid fecte byproviding liliepipei 27, -iiecis the low levelltsmk, 4; wirli lelieiiiloer, 3, Wil-l1 a mouth-piece iii Suid tzmlc,

wifiely-extended, iimiel-elmpe, preierzilily 35 limring its marginserrated or provided Wiitli a iiiultipliciliy of slits, 7e, moutleuiieeebeing Connected lexibly,' 'flair ii'l iexi'ble tube, 8, with die pipe,7, of which ii; forms, in effect e eontiouation, unil being' supportedlay a. limit,l S), adapted with respect lo tlie Weight the mouth-pieceund Clie flexible connection (so liold tlie mouth-piece Witli itsserrated or slittefl marginal elige, rl-ipping face oi lille liquid inthe muli. The result of this coiisslruelion that die Suction. 0perating'llilougli the monilipiece5 drawing in lie air, close lo llie surl'uee oilille liqi el iu sub-divided streams or jele7 entraine me liquid inspray :ind so carries nu iiilermixture of liquid, wliich'mey beleseriliefl aerateil liquid., or liqiiiid-reigliiil air, ee-

coreling to the proportionel of the iii-eimisiure, Wlilli will vary withSeveral. Co'ufli- 199 lions, Sueli lemperature, force of iilie euelionysirio ilerilili of subnereion ol the edge oi? the nioutli-iiiieee. Theresult will be aftiziineil, even tlieiurli lille depth mouth-pieceslioulrl be suliri'iergeil more deeply' lizm ille (leptli of ilie slits,7, Wlieii tlm .euctimi :ulequule lo pull iii lille u ir izlii'ougli blip'lmp `\.'liic'li"will be formed by suoli siilimersion` uml mielieiilimersion will ocvur in ruse# or' liixgli Suction, ille partialvacuum pro-lueofl El@ miller the expanded mouth-piecelending il: io belepwseefh 'agrumi-il, lzlie resistance caused by the buoyancy of thefloat, so that when adjusted originally Withthe serrations only partlysubmerged, upon high suction the submergence may include Vtlle Wholelength ofthe slits forming the serrations, but as indicated Withoutdefeating the operation of the device, because the saine high suctionwill pull the air in through the liquid 'trap thus formed.

In orderfthat this mixture may not be drawn over from the vacuumchamber, 3, directly into the manifold, to lso large an extent as toover-enrich the explosive charge furnished to the manifold through thecarbureter, there is provided at the discharge end of the pipe, 7, inthe vacuum chamber, 3, a baille plate, l2, against which the mixturedischarges which causes precipitation mechanically of the liquidcontained in the discharge, leaving the air drawn in only moderatelycharged with the fuel vapor, the liquid thus precipitated accumulatingin the vacuum chamber, 3, and operating in the usual manner of thiscla-ss ofV devices. lnstead of the serrations in the edge of themouth-piece, 7", the mouth-piece mayV have a finely perforated area asshown at 7 in Fig. 3. Either form of mouthpiece may be `used Whether theconnection is made to the .loat chamber or to the vacuum clxainfber'ofan auxiliary vacuum feed tank.

The expedient above described for lightening the liquid column leadingfrom the main tank, makes it possible to dispense with the customarysupplemental elevated vacuum tank so called, and conduct the liquid fuelsupply directly to a reservoir which constitutes the carbureter lloatchamber, and such a 'structure shown in Fig, 3, wherein said floatchamber, 15, is connected with the main tank, 4f, by the pipe, 7, whichdischarges herein against a baille formed by the top of the chambercausing vvinecl'ianical precipitation of the liquid' particle carried insuspension. ln myA claims l intend the term reservoiim to apply equallyto the reservoir afforded by the lcarburetor float'chamber when'thepipe, 7, leads directly to that chamber and to the reservoir agorded bythe vacuum. feed tank `when said pipe, 7, leads to such tank.

l clairnzl. ln a vacuum fuel feeding device in combination with a lowlevel main supply tank, a reservoir at a higher level, a duct leadingfrom the low level tank to said reservoir, and means for inducingsuction therethrough; a horizontally-extended mouth-piece for said ductin the low level tank, and means for positioning said mouthpiece withits intake margin substantially as the surface of the liquid in 'thetank.

2. in a structure such as defined in claim l, the margin of themouth-piece being serrated. l

3. ln a structure such as defined in claim l, the means for positioningthe mouth-piece at the liquid surface, consisting of a float whichcarries the mouth-piece and a flexible tube connecting said mouth-piecewith the connection of the duct to the tank.

al.. .ln a structure such defined in claim 1, a baffle in the reservoiragainst which the duct discharges for precipitating yliquid from themixed air and liquid discharged.

5, lnA a structure such as defined in claim el, foregoing, the dischargeconnection in. the reservoir being positioned for directing thedischarge against. the wall of the reservoir whereby such wallconstitutes the baiile.

ln testimony whereof, have hereunto set m i hand at Chicago llinois this27th dav of June, 1917 l Clllltflil S, BURTON.

